<template>
  <div id="app">
    <!-- 占位组件,一级路由对应组件的渲染出口 -->

         <router-view/>

    

  </div>
</template>

<style>
a{
  color: black;
  text-decoration: none;
}
a.router-link-active{
  color: red;
}
</style>
